Drainage in Corstorphine
Corstorphine is one of Edinburgh's most established western suburbs, with a character shaped by its position at the foot of Corstorphine Hill and its evolution from an independent village to an integral part of the city. The area's drainage profile reflects this layered history—from the medieval core around Corstorphine High Street and the Old Parish Church, through substantial 1930s suburban development, to post-war housing estates and modern commercial developments around the Gyle.
Corstorphine Hill, a prominent geological feature rising to 161 metres, dominates the area and profoundly influences drainage patterns. Surface water from the hill's slopes drains toward properties at lower elevations, and properties on the hillside or at its foot can experience significant surface water flow during heavy rainfall. The hill's geology—a mixture of dolerite, sandstone, and glacial deposits—creates variable ground conditions that affect both surface water behaviour and underground drainage stability.
The 1930s housing that characterises much of Corstorphine—substantial semi-detached and detached houses along streets like Corstorphine Road, Kaimes Road, and around Carrick Knowe—features drainage systems now approaching 90 years of age. These properties typically use clay drainage pipes with cement-jointed connections, and while the construction quality was generally good for its era, the combination of age, ground movement, and tree root pressure from the established gardens that characterise this area creates recurring maintenance demands. The mature trees in Corstorphine's gardens and along its streets—including many specimen trees in larger properties near the hill—are a persistent source of root intrusion into aging clay pipes.
Edinburgh Zoo, one of Corstorphine's most prominent landmarks, sits on the slopes of Corstorphine Hill. The surrounding residential streets serve substantial family homes that have often been extended and modified over the decades, adding bathrooms, utility rooms, and kitchen extensions that increase drainage demand beyond original design capacity. Understanding whether your property's drainage has been properly upgraded to match its current configuration is important.
The post-war housing developments in Clermiston and East Craigs feature different drainage infrastructure—typically a mix of clay and early PVC systems serving more uniform housing types. These areas were developed with planned drainage routing, but the systems are now 50 to 70 years old and beginning to require attention.
The Gyle area and Edinburgh Park represent Corstorphine's modern commercial character, with drainage designed for retail, office, and transport infrastructure. Edinburgh Gateway Station and the surrounding development have contemporary drainage, but connection to the wider network serving older Corstorphine can create transition challenges.
Corstorphine's drainage needs reflect its suburban maturity—properties with established gardens, aging but well-built infrastructure, and increasing demands from modern living. Regular maintenance and early intervention prevent the costly emergency situations that arise when 90-year-old drainage systems are pushed beyond their current capacity.